Injecting enums with the Spring Framework

Today I needed to inject an Enum into a bean's constructor using Spring.

First I thought I'd need to write my own FactoryBean or 'better' a PropertyEditor.

Well no need, it is already nicely handled by the framework. After a bit of googling, I found the documentation in Appendix A of Spring's reference

And here is what actually works just fine. If I have the following enum:

public enum Language {
 EN, FR
}

And the following class that I need to instantiate with Spring:

public class LocalisedLogger {
 private final Language lang;
 public LocalisedLogger(Language lang) {
   this.lang = lang;
 }
}

Then I can just configure it like this:

<beans>
 <bean id="logger" class="org.leberrigaud.example.LocalisedLogger">
   <constructor-arg value="FR">
 </constructor-arg>
</bean>
</beans>

That'it! Spring does the rest…